CSV Split Studio
Split a CSV without breaking it
Doesn't corrupt your file. Doesn't upload it. Doesn't ask for your email. Cut it into pieces of a set size, split by a column or by two at once, by date, by number range, take a random sample or the top N, or describe the files you want in plain English. Choose which columns come out and in what order, write CSV or .xlsx, and save the settings as a recipe you can reuse or share. You see the file list before the ZIP is written, and a count of rows in against rows out after.
Correct output
Values holding a comma, a quote, or a line break survive the round trip as one field. Splitting on raw line breaks corrupts any record with a newline inside a quoted field. This doesn't do that.
Stays on your machine
Parsing and splitting run in your browser; your file is never uploaded. The only request carrying anything from your data is AI Split, which sends your description, your column names and whether each reads as text, a number or a date, plus value summaries from the columns you tick — never your rows.
No account
No sign-up, no login, no email field. Drop a file in and download the ZIP.